Yes- i agree about Gore,a pure hitter.But i think Campbell may also hit,although not 100% sure.
Yes i think Campbell uses both strokes as do most players. Most people don't realize that most tour players use a TYPE of the hitting stroke on almost every short game shot as well as their "punch" shots.
Short game Hitters abound on the PGA. And although untaught by TGM, it is a good feeling that the thrust of the Right Arm is tour tested. Homer was a keen observer.